Multifunction high performance graphics rendering processor

(19)

(11)

EP 0 475 422 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	16.06.1993 Bulletin 1993/24

(43)	Date of publication A2:
	18.03.1992 Bulletin 1992/12

(21)	Application number: 91115523.2

(22)	Date of filing: 13.09.1991

(51)	International Patent Classification (IPC)⁵: G06F 15/72

(84)	Designated Contracting States:
	DE FR GB

(30)

Priority:

14.09.1990 US 582697

(71)	Applicant: Hughes Aircraft Company
	Los Angeles, California 90045-0066 (US)

(72)	Inventors:
	Peaslee, John M. Chino Hills, California 91709 (US) Malacarne, Jeffrey C. Chino Hills, California 91709 (US)

(74)	Representative: Witte, Alexander, Dr.-Ing.
	Witte, Weller, Gahlert, Otten & Steil, Patentanwälte, Rotebühlstrasse 121 D-70178 Stuttgart D-70178 Stuttgart (DE)

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References cited: :

(54)	Multifunction high performance graphics rendering processor

(57) Disclosed is a multifunction cogenerator or graphics processor (10) for use in a graphics rendering processor. The graphics processor (10) comprises dual graphics engines operating in parallel, with one of the engines having higher operating priority than the other. The graphics processor (10) comprises a conics, vector, and area fill generator (43), a symbol generator (45), a bit block transfer operator (47), and a block texturing and complex clip mask processor (30) synchronously controlled by a multi-process scheduler (46). Included in the graphics processor (10) is a large display memory (26) for receiving and storing program instructions and data generated by an external host processor (14), internal generators and processors, and a bit mapped memory of a graphics display. The graphics processor (10) provides hardware specific graphics functions and externally programmable general purpose processing

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